Cushion tire



Patented Sept. 1, 192.5. i

N 1,552,081 j UNITED STA'iEs PA'IENT't-OFFICE.

CARL E. REIT, or AKRON, OHIO, AssIGNoR rro LAMBERT TIRE a RUBBER Co., orBAR- BERTON, OHIO, A CORPORATION or ARIZONA.

' CUSHION TIRE.

Application filed September 13, 1923. Serial No. 662,507.V

To all whom. t may concern.'

Be it known that I, CARL E. REIT, a citi- Zen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented `certain new and useful Improvements in Cushion Tires, of whichthe following is a specification.

My invention relates to certain new and useful improvements in cushiontires and it primarily has for its object to provide a cushion tire ofsuch construction that'it will not only possess great resiliency', butwill prevent side sway of the vehicle on which the tires are used.

Genercally the invention comprises a tire of rubber having conicalrecesses entering from the opposite sides in staggered relation wherebythe rubber walls between adjacent recesses lwill constitute a Zig-zagweight supporting wall alongthe tire, the axes of adjacent recesseslying a distance apart less than the greatest diameter of the recesswhereby the rolling line of contact pressure will be transmitted inradial planes in a Zig-zag path from one side of the tire to the otherand vice versa, the vehicle always riding as it were on air and rubber.

In its more 4detailed nature the invention also resides in those noveldetails of construction, combination and arrangement of parts, all ofwhich will be first fully de-V scribed, and then be specifically pointedout in the appended claims, reference being had to the accompanyingdrawings, in which- Figure l illustrates myV invention in the course ofmanufacture.

Figure?l is a detail side elevation of a portion of my tire.

Figure 3 is a developed plan section on the line 3 3 of Figure 2.

In the drawing, in which like numerals of reference indicate like partsin all the figures, l is the tire body which may be composed of solidrubber or built up Lin the usual fashion and which is providedl with twoseries of conica-l holes or recesses 2 2, one series entering from oneside of the tire and the other series entering from the other side ofthe tire, the two series being staggered as best shown in Figure 3. Theholes or recesses 2 preferably do not extend entirely through the tirebut preferably eX- tend three-quarters of the way through and their axes4 are spaced apart a distance less than the greatest diameter of theholes 2,

whereby the rubber walls Sbetween adjacent holes 2 will be ofV suchthickness that the tire will always be riding vpartly over air andpartly over rubber. In otherwo'rds thel arrangement vand proportioningof the holes 1s .such that assuming the dot and dash line axis 4 at theleft in Figure 3 to constitute the rolling line of contact of the edgeof the radial plane to which the pressurethrusts o f the tire istransmitted to the axes of the tire in rolling over the ground, thearrow 1l indicating the direction of the travel, the dotted lines 5 willindicate the solid rubber pressure area which, as will be seen, variesor shifts from one side of the tire to the other along the direction ofthe arrows 10 1n Figure 3. This gives the eect of a lateral zig-zagaction of the tire and counteracts the tendency of the tire to cause aside sway of the vehicle which sometimes occurs at high speeds withcushion tires or tires in which the holes go all the way through. y

It will further be seen that by arranging the axes of the adjacentrecesses 2a distance apart less than the diameter of the recesses f theweight will be riding partly over the recess and partly over the solidrubber wall between the recesses, or as it is known in the trade, theweight will be riding always partly over air and partly over'rubber.

Furthermore the provision of the conical recesses with large openings asshown preventsthe accumulation of mud' and dirt in the recesses, thetendency of the tire action being to clear the recesses as the tirerolls along.

It will alsol be noted that the various axes of the recesses 2 all lieperpendicular to the same circumference 7, or substantially so, thisbeing found to be the ypreferable aro rangement in practice. 6designates the rim of the wheel on which the tire is built and 8indicates the usual mold having the cores 9 for the formation of thetire. As the mold structure forms no part of the present inventiondetailed description thereof is lthought to be unnecessary.

By extending the recesses 2 approximately three-quarters the way throughthe tire the benefit of large air spaces is obtained and at the sametime a substantially uniform rubber wall 3 is obtained throughout theentire zig-zag path indicated lby the arrows 10.

l:From the foregoing deSCription, taken in connection with theaccompanying .(lraw'ving,Y l it is thought thev construction;operationand advantages of the invention Willmloe clearm4 to :'tliosesk-illed-intheart. f

What I claim is: l. A cushion tire having conical recesses extendinginwardly from oppositefrsides in staggered relation with their axeslspaced apart a distanceclessf'thaii ltl1e'-greatest di-@f 'UP ameter ofthe recesses, said recesses extendingrrn'ore' than Vvl1a`lway'throughthe tire, f' substantially V*as* Ashown and described.y

V12.fAciisliion tire vhaving conical recesses extending ``inwardly from@opposite sides in Vst'aggered relatioirvi-th-their"axes spaced apart adistance less than the greatest di- -ameter o- -tl1e.- recesses, saidrecesses extending substantially. three-quarters the Way ameter ofthefspacesgvsaid spaces 'extend- *ingr more than halfway-1 throughthetire.

CARL amr.

